Cost savings model equations

I am trying to enter an equation in excel to help compare two percentages BETWEEN TWO GROUPS - a control group and an experimental group that are either (-) negative (aka saved money, because costs at the the end of year are LOWER) or LOST money (+) positive value(aka because costs at the end of the year are HIGHER). I have shown a few numbers and values just as an example.

In this example:
Control Group = A
Experimental Group = B

Here is what i am trying to input:

Value
++ Cost increase
A>B: A and B lost money, but A lost more money than B, subtract B-A *-1= -8% savings
A<B: A and B lost money, but B lost more money than A, subtract B-A = +8% loss

Mix Cost increase and decrease
+- A>B: A lost money and B saved money, add ABS[10:2] *-1 (-12%) savings (note excel wont let me do ABS since this is a %)
-+ A<B: A saved money and B lost money, add ABS[10:2] (+12%) loss

-- Decrease in costs
A>B: A and B saved money, but A saved more money than B, = B i.e. -2% (keep at -2%)
A<B: A and B saved money, but B saved more money than A, B-A = - 8% savings

PLEASE HELP. EXAMPLE WORK BOOK ATTACHED

Welcome to the Forum AHCmaz.

I am having difficulty understanding the written descriptions. Uploading a sample Excel workbook (not pics or links to third party sites) often clarifies things.
Be sure to remove any sensitive data. Include enough rows (20-50) to show what you are starting with and include a few examples (hand typed if necessary) of what the goal is.

To upload a sample Excel workbook click Go Advanced just below the reply window and at the bottom of the page click Manage Attachments. When the file is uploaded click Done.

Hi, welcome to the forum

To best describe or illustrate your problem you would be better off attaching a dummy workbook. The workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell contains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook.

To attach a file to your post,
click advanced (next to quick post),
scroll down until you see "manage file",
click that and select "add files" (top right corner).
click "select files" find your file, click "open" click "upload" click 'done" bottom right. click "submit reply"

Once the upload is completed the file name will appear below the input boxes in this window.
You can then close the window to return to the new post screen.